How do animals defend themselves from predators?

There are various methods for defence, depending on the animal camouflage, which may enable them to blend into their surroundings, or make them appear more dangerous than they really are hard shells (e.g. Turtles, molluscs) quills or spines (porcupine, echidna) sharp teeth and/or claws burrowing into the ground to hide speed and agility of movement.

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